name: Deploy Documentation

on:
  push:
    branches:
      - main

permissions:
  contents: read
  pages: write
  id-token: write

concurrency:
  group: pages
  cancel-in-progress: true

jobs:
  deploy:
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v7

      - name: Install Nix
        uses: DeterminateSystems/nix-installer-action@v22

      - name: Setup Nix cache
        uses: DeterminateSystems/magic-nix-cache-action@v14

      - name: Generate Documentation
        run: nix develop --command cargo doc --document-private-items

      - name: Create Redirect Index
        run: |
          CRATE_NAME=$(sed -n 's/^name = "\(.*\)"/\1/p' Cargo.toml | head -n 1 | tr '-' '_')
          echo "<meta http-equiv=\"refresh\" content=\"0; url=${CRATE_NAME}/index.html\">" > target/doc/index.html

      - name: Upload Artifact
        uses: actions/upload-pages-artifact@v5
        with:
          path: target/doc

      - name: Deploy to GitHub Pages
        id: deployment
        uses: actions/deploy-pages@v5